MALICIOUS
202
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded links, many of which point to a redirector infrastructure known for malicious activity. The primary redirector URL is 'https://ttraff.cc/wb?keyword=ocenaudio%20tutorial%20pdf', suggesting a lure for a tutorial or download. The presence of a large number of external PDF links, many benign but some pointing to potentially malicious redirectors, indicates an attempt to create a link farm or distribute malicious content. The ML classifier strongly flagged this PDF as malicious.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 6
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.cc/wb?keyword=ocenaudio%20tutorial%20pdf In PDF document text
- http://files.upperskagitlibraryfoundation.org/uploads/1/3/1/6/131607930/ec166a519f.pdfIn PDF document text
- http://files.harlesdencommunityhub.com/uploads/1/3/0/7/130739570/sataduvoxepolusun.pdfIn PDF document text
- http://melute.crosspointevb.com/uploads/1/3/0/7/130775953/4917679.pdfIn PDF document text
- http://files.houseonreddirtroad.com/uploads/1/3/0/9/130969183/tifufutukuregekemaz.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5349/0071/files/buteboli.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1767/4656/files/83873913330.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/1711/7589/files/2880769817.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0430/6681/8721/files/takizinufot.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/4947/6518/files/35392912493.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0916/9815/files/maneguziku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/3196/9438/files/jovesirafezeboja.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0705/7825/files/ziwalonegono.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9105/9097/files/20223026833.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/5276/9192/files/88231300979.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4274895189.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/6104/3605/files/bodiwisufovipilefej.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0876/0735/files/balamiveworu.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
🗂 Part of campaign:
harlesdencommunityhub.com
3 samples
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00005f76.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F76 | 4996 bytes |
SHA-256: 3b4640e986e763adf0d30ee4b96dd5592af2027260c819c8c86758ad03e4ae38 |
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font_01_sfnt_off00007084.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7084 | 11472 bytes |
SHA-256: 00a3fbc8669a5120e9f58911802812243db3dcc3a842892a336a5c81a7aadd85 |
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